The instructions in this guide apply to Android 10 and higher.
To fix the second problem, you oughta download any relevant data in advance.
Accessing information like the latest news or weather isn’t possible without an internet connection.

Unfortunately, if you experience this problem, there doesnt seem to be any way to fix it currently.
Here’s how to do it.
In the Google Mapsapp on your Android gear, tap yourProfile iconand then selectOffline maps.

TapSELECT YOUR OWN MAP.
Zoom and pan until the area you want is within the blue box and then tapDOWNLOAD.
Your map downloads and automatically updates when required.

Unfortunately, you cant ask Google to take you anywhere else.
If you pop in the address into Google Maps, it will work.
If you ask for a contact, Google Assistant retrieves the address.

First, verify your preferred music app is set up in Google Assistant.
launch the Googleapp and then tapMore>tweaks>Google Assistant.
Tap theServicestab, then selectMusic.

Choose your preferred music app by clicking the circular button to its right.
kill the Google app.
Ensure you’ve downloaded songs in your music app or transferred some MP3 files to your Android gadget.

Say,Hey Google, play music.If youre offline, it plays the songs stored on your gadget.